Kaley Cuoco, 28
Kaley Cuoco turns 28 today. Cuoco played tennis when she was young and was a nationally ranked amateur player, but stopped when she reached 16. She made her film debut in 1995's Virtuosity. She appeared in the Disney channel original movie Alley Cats Strike in 2000, before making her claim to fame in ABC's 2002 sitcom 8 Simple Rules as Bridget. She went on to star in the final season of Charmed as Billie.
Cuoco is currently engaged to professional tennis player Ryan Sweeting, and is starring on CBS's #1 comedy The Big Bang Theory as Penny.
Ben Stiller, 48
Ben Stiller turns 48 today. The famous actor, comedian, producer, and director has written, starred in, directed, and/or produced over 50 films including There's Something About Mary, Zoolander, Meet the Parents, Madagascar, and Tropic Thunder. Stiller is the son of veteran comedians Jerry Stiller and Anne Meara.
He married Christine Taylor in 2000, and have two children, a daughter, Ella, and a son, Quinlin. Stiller directed and will star in The Secret Life of Walter Mitty, in theaters December 25.